/*
 * Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
 *
 *
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 *
 *
 *
 *
 *
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 */

package com.sun.imageio.spi;

import java.io.File;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Locale;
import javax.imageio.spi.ImageOutputStreamSpi;
import javax.imageio.stream.ImageOutputStream;
import javax.imageio.stream.FileCacheImageOutputStream;
import javax.imageio.stream.MemoryCacheImageOutputStream;

public class OutputStreamImageOutputStreamSpi extends ImageOutputStreamSpi {

  private static final String vendorName = "Oracle Corporation";

  private static final String version = "1.0";

  private static final Class outputClass = OutputStream.class;

  public OutputStreamImageOutputStreamSpi() {
    super(vendorName, version, outputClass);
  }

  public String getDescription(Locale locale) {
    return "Service provider that instantiates an OutputStreamImageOutputStream from an OutputStream";
  }

  public boolean canUseCacheFile() {
    return true;
  }

  public boolean needsCacheFile() {
    return false;
  }

  public ImageOutputStream createOutputStreamInstance(Object output,
      boolean useCache,
      File cacheDir)
      throws IOException {
    if (output instanceof OutputStream) {
      OutputStream os = (OutputStream) output;
      if (useCache) {
        return new FileCacheImageOutputStream(os, cacheDir);
      } else {
        return new MemoryCacheImageOutputStream(os);
      }
    } else {
      throw new IllegalArgumentException();
    }
  }
}
